Speaker
Dr
James Bueno
(University of Alberta)
Description
The DEAP-3600 dark matter detector at SNOLAB will search for scattering of weakly interacting massive particles from a 3600 kg liquid argon target. The liquid argon is held in a spherical vessel made from acrylic, with the highest standards of purity for both bulk acrylic and removal of surface activities. At the top of the vessel there is a neck opening to the cooling system, and alpha particles decays in this region can potentially introduce a background to the dark matter measurement. The steps to eliminate these alpha backgrounds will be presented, including details on the detector construction, radioactivity simulations, and analysis methods for measuring alpha backgrounds.
Author
Dr
James Bueno
(University of Alberta)
